(;
AB[pd][qe][pf][of][og][pj][qj][pp][mq][dp][cc][dd][fd][jc]
AW[qc][pc][nc][qf][pg][ql][ol][bd][cf][ci][fq]
C[Black's response to the marked play?
Source:
Go World #5, Jan-Feb 1978, pp. 56-57
Match the Joseki to the Fuseki, Sakiyama Toshio 9p]
TR[fq]
(;
B[ip]
C[Correct. The pincer here accomplishes 3 goals with 1 move: develops the 2 stones in the lower right, pincers the White stone, and indirectly threatens the 2 White stones on the lower right side.];
W[cn]
C[White might try playing here.];
B[dn]
C[But Black only needs to lean on White here. With weak groups on the bottom and right sides, White will be in for a hard fight.]
)
(;
B[cn]
C[Simply defending is inappropriate here.];
W[dr]
C[A likely continuation follows.];
B[cq];W[iq]
C[Black has taken the pressure off White, who now only has to worry about his right side group.]
)
(;
B[fp]
C[Attaching to White's weak stone merely helps White settle himself immediately.];
W[gp];B[gq]
C[If Black plays conservatively, White will easily settle himself, so Black can try to crosscut.
The following would be a typical sequence.];
W[ep];B[fo];W[eq];B[eo];W[hq];B[gr];W[hr];B[go];W[hp];B[dq];W[fr];B[er];W[gs];B[cn]
C[Black can make strong outside influence, but here, White's upper left group neutralizes that influence. Black has gained nothing.
Moreover, now with White's strong bottom group, Black's lower right group is no longer strong enough to effectively attack the 2 White stones on the right side.]
)
)